{"items":[{"id":"NVI-00013915","kind":"vulnerability","title":"rclone: Directory metadata (chmod/chown/chtimes) applied through a planted symlink in rclone local --links escapes the destination","revision":2,"unknowns":["Customer inventory, deployment, reachability and exploitation have not been inspected."],"lifecycle":"active","identifiers":["GHSA-f8g7-2xjc-7mfh","CVE-2026-88016"],"plain_summary":"GitHub lists this reviewed advisory for github.com/rclone/rclone. Published version ranges and source prerequisites are shown below; this is not an inspection of a visitor’s application.","review_status":"source_listed","control_topics":[],"public_actions":[{"summary":"Identify the exact component and deployed version, examine the linked publisher’s conditions, and retain evidence of any mitigation.","source_ids":["sr-23e45af6419ffe15e865364651b54e19"],"action_type":"investigate","limitations":"Confirm current vendor support, compatibility and deployment evidence. This report has not tested a fix in your system.","current_supported_target":null}],"schema_version":"1.1.0","source_metrics":[{"kind":"CVSS","as_of":"2026-09-10T22:51:35.000Z","value":"6.5 medium","meaning":"GitHub source severity; exploitability and local consequence require separate evidence.","source_id":"sr-1c8c6c446923e12c07086ccb91076578"},{"kind":"EPSS","as_of":"2026-11-03T12:00:27.000Z","value":"0.187%","meaning":"FIRST EPSS model v2026.06.15; exploitation probability over 30 days, percentile 0.08389. Missing scores are unknown.","source_id":"sr-23e45af6419ffe15e865364651b54e19"}],"why_it_matters":"Published affected context helps an owner decide what evidence to gather. This report has not examined your application.","related_sources":[{"id":"sr-1c8c6c446923e12c07086ccb91076578","url":"https://github.com/advisories/GHSA-f8g7-2xjc-7mfh","basis":"vendor_advisory","notes":"GitHub Advisory Database; CC-BY-4.0. Each advisory links its original attribution. Null normalizes fields.","title":"GHSA-f8g7-2xjc-7mfh","publisher":"GitHub Advisory Database","observed_at":"2026-11-01T22:54:05.264Z"},{"id":"sr-23e45af6419ffe15e865364651b54e19","url":"https://www.first.org/epss/data.html","basis":"official_catalog","notes":"FIRST EPSS; probability of exploitation in the next 30 days, not local compromise. Dataset date/model retained; FIRST services terms apply.","title":"CVE-2026-88016","publisher":"FIRST EPSS","observed_at":"2026-11-03T17:45:16.085Z"}],"affected_context":[{"certainty":"source_listed","source_ids":["sr-1c8c6c446923e12c07086ccb91076578"],"technology":"github.com/rclone/rclone","known_exclusions":[],"conditions_summary":"## Summary\nWith `-l/--links`, rclone's local backend recreates a source `.rclonelink` object as a real symlink at the destination **verbatim** (preserved by design for faithful backups). Directory-metadata application, however, does **not** go through the `os.Root` sandbox and does **not** use NOFOLLOW syscalls. A local `Directory` always has `translatedLink=false`, so when the destination path already exists as a planted symlink, rclone applies `chmod`/`chown`/`chtimes` **through** that symlink to a target **outside** the destination tree. An attacker who controls the source contents (malicious/compromised remote, shared bucket) obtains attacker-valued `chmod`/`chown`/`chtimes` of an arbitrary path outside the backup destination.\n\n## Root Cause\n- `MkdirMetadata` (`backend/local/local.go:895`) calls `f.lstat` (=`os.Lstat`, local.go:465) on the destination path. On a pre-planted symlink, `os.Lstat` succeeds, so the `errors.Is(err, os.ErrNotExist)` branch (local.go:896) that would create a real directory via the `os.Root`-guarded `f.Mkdir` is **not** taken. Instead a `Directory` is built directly on the symlink path.\n- `writeMetadataToFile` runs raw `os.Chown` (`backend/local/metadat","public_affected_ranges":["<= 1.75.0"]}],"null_published_at":"2026-11-08T19:53:33.527Z","source_updated_at":"2026-09-10T22:51:35.000Z","source_disclosed_at":"2026-09-10T22:51:34.000Z","is_synthetic_fixture":false,"null_last_reviewed_at":null,"public_change_summary":"Dated EPSS estimate updated; this is not a new disclosure or proof of exploitation.","null_first_observed_at":"2026-11-01T22:54:05.264Z"},{"id":"NVI-00013915","kind":"vulnerability","title":"rclone: Directory metadata (chmod/chown/chtimes) applied through a planted symlink in rclone local --links escapes the destination","revision":1,"unknowns":["Customer inventory, deployment, reachability and exploitation have not been inspected."],"lifecycle":"active","identifiers":["GHSA-f8g7-2xjc-7mfh","CVE-2026-88016"],"plain_summary":"GitHub lists this reviewed advisory for github.com/rclone/rclone. Published version ranges and source prerequisites are shown below; this is not an inspection of a visitor’s application.","review_status":"source_listed","control_topics":[],"public_actions":[{"summary":"Identify the exact component and deployed version, examine the linked publisher’s conditions, and retain evidence of any mitigation.","source_ids":["sr-1c8c6c446923e12c07086ccb91076578"],"action_type":"investigate","limitations":"Confirm current vendor support, compatibility and deployment evidence. This report has not tested a fix in your system.","current_supported_target":null}],"schema_version":"1.1.0","source_metrics":[{"kind":"CVSS","as_of":"2026-09-10T22:51:35.000Z","value":"6.5 medium","meaning":"GitHub source severity; exploitability and local consequence require separate evidence.","source_id":"sr-1c8c6c446923e12c07086ccb91076578"}],"why_it_matters":"Published affected context helps an owner decide what evidence to gather. This report has not examined your application.","related_sources":[{"id":"sr-1c8c6c446923e12c07086ccb91076578","url":"https://github.com/advisories/GHSA-f8g7-2xjc-7mfh","basis":"vendor_advisory","notes":"GitHub Advisory Database; CC-BY-4.0. Each advisory links its original attribution. Null normalizes fields.","title":"GHSA-f8g7-2xjc-7mfh","publisher":"GitHub Advisory Database","observed_at":"2026-11-01T22:54:05.264Z"}],"affected_context":[{"certainty":"source_listed","source_ids":["sr-1c8c6c446923e12c07086ccb91076578"],"technology":"github.com/rclone/rclone","known_exclusions":[],"conditions_summary":"## Summary\nWith `-l/--links`, rclone's local backend recreates a source `.rclonelink` object as a real symlink at the destination **verbatim** (preserved by design for faithful backups). Directory-metadata application, however, does **not** go through the `os.Root` sandbox and does **not** use NOFOLLOW syscalls. A local `Directory` always has `translatedLink=false`, so when the destination path already exists as a planted symlink, rclone applies `chmod`/`chown`/`chtimes` **through** that symlink to a target **outside** the destination tree. An attacker who controls the source contents (malicious/compromised remote, shared bucket) obtains attacker-valued `chmod`/`chown`/`chtimes` of an arbitrary path outside the backup destination.\n\n## Root Cause\n- `MkdirMetadata` (`backend/local/local.go:895`) calls `f.lstat` (=`os.Lstat`, local.go:465) on the destination path. On a pre-planted symlink, `os.Lstat` succeeds, so the `errors.Is(err, os.ErrNotExist)` branch (local.go:896) that would create a real directory via the `os.Root`-guarded `f.Mkdir` is **not** taken. Instead a `Directory` is built directly on the symlink path.\n- `writeMetadataToFile` runs raw `os.Chown` (`backend/local/metadat","public_affected_ranges":["<= 1.75.0"]}],"null_published_at":"2026-11-02T10:00:37.174Z","source_updated_at":"2026-09-10T22:51:35.000Z","source_disclosed_at":"2026-09-10T22:51:34.000Z","is_synthetic_fixture":false,"null_last_reviewed_at":null,"public_change_summary":"First indexed by Null; source disclosure date is shown separately.","null_first_observed_at":"2026-11-01T22:54:05.264Z"}],"next_cursor":null,"snapshot_revision":"42594"}